Knoxville Weather Forecast

    • 65
    • 85

    Rain Showers

    • 68
    • 73

    Rain Showers Likely

    • 66
    • 83

    Chance Thunderstorms

    • 67
    • 83

    Chance Rain Showers

    • 63
    • 84

    Chance Rain Showers

    • 57
    • 74

    Chance Rain Showers

Today 15 Sep Knox

Partly sunny with a slight chance of Showers and Thunderstorms. Warmer. Near steady temperature in the mid 80s. Northwest Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 101.

Tonight 15 Sep Knox

Showers. Thunderstorms, mainly in the evening. Lows in the mid 60s. North Winds 5 to 10 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Knoxville Temperature Statistics

September Temperature

Galesburg Municipal Airport (7.5 miles)

  • Lowest 13 September, 2026

    52.9 °F

  • Average September

    74.7 °F

  • Highest 3 September, 2026

    93.6 °F

Climate (2021–2026)

Galesburg Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    52.2 °F

  • Average High 2021–2026

    62.5 °F
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